Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Jun-ichi Kodama"'
Autor:
Rika Iriguchi, Akihiro Hamanaka, Fa-qiang Su, Takashi Sasaoka, Hideki Shimada, Ken-ichi Itakura, Kazuhiro Takahashi, Jun-ichi Kodama, Gota Deguchi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Underground coal gasification (UCG) is process of directly recovering energy as combustible gases such as hydrogen and carbon monoxide by combusting unmined coal resources in situ. During UCG process, the temperature in the gasification zone
Externí odkaz:
https://doaj.org/article/8c331081f2d54fbd95fd7e9c66c1deb1
Autor:
Akihiro HAMANAKA, Yuma ISHII, Ken-ichi ITAKURA, Fa-qiang SU, Jun-ichi KODAMA, Takashi SASAOKA, Hideki SHIMADA, Gota DEGUCHI
Publikováno v:
Journal of MMIJ, Vol 140, Iss 6, Pp 50-57 (2024)
Underground Coal Gasification (UCG) is a promising process for recovering energy from potential underground coal resources as combustible gases such as hydrogen and carbon monoxide. The gasification process that occurs underground is an invisible phe
Externí odkaz:
https://doaj.org/article/0520f49cf2a84f8593919d2e05a3757b
Autor:
Rika Iriguchi, Yuma Ishii, Akihiro Hamanaka, Faqiang Su, Ken-ichi Itakura, Jun-ichi Kodama, Takashi Sasaoka, Hideki Shimada, Gota Deguchi
Publikováno v:
Eng, Vol 4, Iss 4, Pp 2960-2977 (2023)
Underground coal gasification (UCG) is the process of directly recovering energy as combustible gases such as hydrogen and carbon monoxide by combusting unmined coal resources in situ. The UCG process is an invisible phenomenon, in which fracturing a
Externí odkaz:
https://doaj.org/article/ecd8b263d3bf4f399dd5367d80e4f2f8
Autor:
Akihiro Hamanaka, Yuma Ishii, Ken-ichi Itakura, Takashi Sasaoka, Hideki Shimada, Nuhindro Priagung Widodo, Budi Sulistianto, Jun-ichi Kodama, Gota Deguchi
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Underground Coal Gasification (UCG) requires monitoring of the gasification area because the gasification process is invisible and the reaction temperature exceeds 1000 °C. Many fracturing events that occurred due to coal heating can be cap
Externí odkaz:
https://doaj.org/article/281d3526d9124da0acc616cc526cd6dd
Publikováno v:
Advances in Civil Engineering, Vol 2022 (2022)
The design of landfill liners of waste disposal to reduce migration of leachate containment, low swelling, and shrinkage and ensure sufficient shear strength to resist bearing capacity and instability of the landfill has been a major challenging task
Externí odkaz:
https://doaj.org/article/df086b2e8d8f4f648d1227aef5fa2e90
Autor:
Clement A. Amagu, Cheng Zhang, Jun-ichi Kodama, Kazuyuki Shioya, Tomoyuki Yamaguchi, Atsushi Sainoki, Daisuke Fukuda, Yoshiaki Fujii, Mostafa Sharifzadeh
Publikováno v:
Advances in Civil Engineering, Vol 2021 (2021)
The Higashi-Shikagoe limestone quarry is an open-pit mine situated in Hokkaido Prefecture, Japan, that has experienced four slope failure incidents since 1996. The rock slope behaviour has been monitored since the first failure event by measuring the
Externí odkaz:
https://doaj.org/article/b4136a3c1551493e8e0eff995abe00b1
Autor:
Akihiro HAMANAKA, Fa-qiang SU, Ken-ichi ITAKURA, Kazuhiro TAKAHASHI, Kohki SATOH, Jun-ichi KODAMA, Gota DEGUCHI
Publikováno v:
Journal of MMIJ, Vol 134, Iss 7, Pp 81-90 (2018)
Underground coal gasification (UCG), a technique used to recover coal energy by the in-situ conversion of coal into gaseous products, enables recovery of coal energy from the potential coal resources abandoned under the ground for either technical or
Externí odkaz:
https://doaj.org/article/ef75ec6265e645e1bf02807e3128c90a
Autor:
Jun-ichi KODAMA, Takuto TATEKAWA, Ryosuke NAKA, Akihiro HAMANAKA, Ken-ichi ITAKURA, Gota DEGUCHI, Daisuke FUKUDA, Yoshiaki FUJII
Publikováno v:
Journal of MMIJ, Vol 134, Iss 7, Pp 91-98 (2018)
Small-scale underground coal gasification (UCG) model tests with a linking hole were carried out using two types of specimens made of either block coal or crushed coal to clarify their characteristics of combustion and gasification. Many similar char
Externí odkaz:
https://doaj.org/article/acc9e5a26afd486f9feb1ed70424ceba
Autor:
Sophea Boeut, Teppei Oshima, Yoshiaki Fujii, Jun-ichi Kodama, Daisuke Fukuda, Hiroyuki Matsumoto, Kazumi Uchida, Anjula B. N. Dassanayake
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
A persistent increase in the permeability of rock mass caused by transient stress disturbances, if present, could explain the variation in the groundwater level in far fields, increase in petroleum production caused by earthquakes or artificial vibra
Externí odkaz:
https://doaj.org/article/9cb6d01b96be407ba3bb614326165263
Autor:
Umali M. Yasidu, Yoshiaki Fujii, Jun-ichi Kodama, Daisuke Fukuda, George J. Maneya, Johnson Dandadzi, Anjula B. N. Dassanayake
Publikováno v:
Advances in Civil Engineering, Vol 2019 (2019)
To develop affordable countermeasures against the roof falls, the accident records of Mchenga Mine were investigated as the first step. Based on the accident records, it was found that roof falls occurred most in April and May. Humidity measurements
Externí odkaz:
https://doaj.org/article/8c7a3510baee4c9fb05f3d36dd28320a